diff --git a/lib/CodeGen/CodeGenFunction.h b/lib/CodeGen/CodeGenFunction.h
index 0cd0bd9..3a8f60c 100644
--- a/lib/CodeGen/CodeGenFunction.h
+++ b/lib/CodeGen/CodeGenFunction.h
@@ -823,8 +823,7 @@
 
   void EmitClassCopyAssignment(llvm::Value *DestValue, llvm::Value *SrcValue,
                                const CXXRecordDecl *ClassDecl,
-                               const CXXRecordDecl *BaseClassDecl,
-                               QualType Ty);
+                               const CXXRecordDecl *BaseClassDecl);
 
   void EmitDelegateCXXConstructorCall(const CXXConstructorDecl *Ctor,
                                       CXXCtorType CtorType,